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EM84520

Features: • Using 50kW ±1% resistor for RC oscillation.• Compatible with legacy PS/2 mouse.• Compatible with Microsoft serial scrolling mouse.• Compatible with Microsoft PS/2 scrolling mouse.• Serial or PS/2 port auto-detect.• 100 bytes PnP ID code could be fill...

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SeekIC No. : 004336118 Detail

EM84520: Features: • Using 50kW ±1% resistor for RC oscillation.• Compatible with legacy PS/2 mouse.• Compatible with Microsoft serial scrolling mouse.• Compatible with Microsoft PS/2...

EM84520 Data Sheet

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Part Number:
EM84520
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

• Using 50kW ±1% resistor for RC oscillation.
• Compatible with legacy PS/2 mouse.
• Compatible with Microsoft serial scrolling mouse.
• Compatible with Microsoft PS/2 scrolling mouse.
• Serial or PS/2 port auto-detect.
• 100 bytes PnP ID code could be filled by code layer.
• Built-in noise immunity circuit.
• The sampiling rate of motion detector is up to 65KHz.
• Built-in three zener diodes : one in VDD to VSS, two in RTS to VDD.
• CMOS push-pull RXD output.
• Built-in current comparator for photo-couples input.
• Built-in three step dynamic input impedance.
• Three key-switches and four photo-couples inputs.
• RTS debouncing circuit included.
• Photo couple test mode included.
• Low power dissipation.
• Six types Z direction input:
    1. Photo couples input. (Z/1)    4. Mechanical input. (Z/1)
    2. Key-switches input.              5. Photo couples input. (Z/4)
    3. Voltage-sensing input.          6. Mechanical input. (Z/2)
• Package type:
    EM84520AP : 16DIP, Photo couples input. (Z/1) EM84520DP: 16DIP, Mechanical input. (Z/1)
    EM84520BP : 16DIP, Key-switches input. EM84520EP : 16DIP, Photo couples input. (Z/4)
    EM84520CP : 16DIP, Voltage-sensing input. EM84520FP : 16DIP, Mechanical input. (Z/2)


Application

• Serial PnP scrolling mouse.
• PS/2 scrolling mouse.
• Combo PnP scrolling mouse.


Pinout

Connection Diagram


Specifications

Parameter
Ratings
Unit
Min.
Max.
Temperature under bias
0
70
°C
Storage temperature range
-65
150
°C
Supply voltage
-0.3
7.5
V
Power dissipation
-
500
mW



Description

The EM84520 Scrolling Mouse Controller is specially designed to control serial mouse or PS/2 mouse device. This single chip can interface three key-switches and 4 X-Y photo-couples plus Z-axis directly to RS-232C or 8042 controller.

There are four types Z-axis inputs used to implement scrolling mouse functionality.




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